<template>
    <div style="background-color: aqua">
        {{ message }}
        <button @click="greet()">问候</button>
    </div>
</template>

<script>
export default{
    data(){
        return{
            message:'hello,friends!'
        }
    },
    methods:{
        greet(){
            this.message = 'hello,' + this.$attrs.name + '!'
        }
    }
}
</script>

